i) Modified the ReadGridCollection(TGridResult *result) instead of the old ReadESDCol...

i) Modified the ReadGridCollection(TGridResult *result) instead of the old ReadESDCollection(TGridResult *result). ii) Added the ReadLocalCollection(const char *localpath) that creates the tags in the case where the ESDs are stored locally. iii) Added the ReadCAFCollection(const char *filename) that creates the tags for the CAF stored ESDs. iv) Added the private CreateTag(TFile* file, const char *filepath, Int_t Counter) for the creation of the locally stored ESDs.